From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Letter from an accumulator manufacturer advising on charging methods to improve battery capacity.
| Identifier | ExFiles\Box 38\5\ Scan073 | |
| Date | 11th September 1918 | |
| x 3398.. Manufacturers of P & R Accumulators. Established 1889. PETO & RADFORD Proprietors : Pritchett & Gold and Electrical Power Storage Co., Ltd. THE SOCIETY OF MOTOR MANUFACTURERS & TRADERS LTD (Logo) THE MOTOR TRADE ASSOCIATION (Logo) DIRECTORS : G.{Mr Griffiths - Chief Accountant / Mr Gnapp} E.{Mr Elliott - Chief Engineer} B. PRITCHETT SIR ARCHIBALD J.{Mr Johnson W.M.} C. GOLD F.{Mr Friese} C. GRAHAM MENZIES G.{Mr Griffiths - Chief Accountant / Mr Gnapp} R.{Sir Henry Royce} H.{Arthur M. Hanbury - Head Complaints} MINCHIN WILLIAM PETO C. R.{Sir Henry Royce} D.{John DeLooze - Company Secretary} PRITCHETT F.{Mr Friese} W. PRITCHETT DAVID WILLOCK 12 HEDDON STREET, REGENT STREET, LONDON, W.1. TELEPHONE REGENT 2576 TELEGRAMS "CONCENTRATION REG LONDON." REF 11 9 SEP 1918 Messrs Rolls-Royce Limited, Nightingale Road, D E R B Y. Dear Sirs, re Electric Lighting & Starting Accumulators. Further to our correspondence on this subject, we hope you have been able to get better capacity results from the battery submitted, and we think you will do so if you charge it towards the end of its charge at a good deal higher rate, something like 10 to 12 amperes for the last few hours, which is more like the charge it gets on a car. If it is set up on test with a recording ammeter, we think you will obtain the full capacity. We shall be very interested to know how it behaves on the heavy discharge test of starting, and whether the results given under this heading are satisfactory. We are very anxious to co-operate as far as possible on this subject, and so would be interested to have your further comments. Yours faithfully, PETO & RADFORD. G.R.H. Minchin pp D.{John DeLooze - Company Secretary} Anderson | ||